It's common sense to dress more warmly when it gets cold.

天冷了要穿得暖一点儿，这是常识。

《新英汉大辞典》

Why does water turn solid when it gets cold?

为什么水变冷时成固体？

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I make a nest of leaves to hibernate in when it gets cold. And even though it might be wintertime, I sometimes wake up to look for more food.

当天气变冷，我用叶子做成窝住在里面。即便是冬天，有时我也会醒来去寻找更多的食物。

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Why does water turn solid when it gets cold?

为什么水变冷时成固体？

耶鲁公开课 - 心理学导论课程节选

Given the different contractions of the two different metals as a result of the cold, when it gets cold enough iron cannonballs will fall off a brass monkey.

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"In states where heat and humidity is the norm, people may not realize they are vulnerable when it gets cold, " said Gerald McGwin, a professor of epidemiology at University of Alabama.

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The Frogg Togg is scarf shaped and sort of clammy, and when you run it in under cold water (or dip it) it gets cold and stays that way for awhile.

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